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Prevalence and Seasonal Variation of Incidental MRI Paranasal Inflammatory Changes in an Asymptomatic Irish

R Wilson1, H Kuan Kok1, D Fortescue-Webb1

  • 1Department of Radiology, Tallaght Hospital, Dublin 24, Ireland.

Irish Medical Journal
|January 27, 2018
PubMed

Insights

Nearly half of asymptomatic Irish individuals show inflammatory paranasal sinus changes on MRI, suggesting this may be a normal variant. Clinical correlation remains vital for diagnosing sinusitis.

Area of Science:

  • Radiology
  • Otolaryngology
  • Medical Imaging

Background:

  • Inflammatory paranasal sinus changes are frequently observed as incidental findings during head and neck MRI scans.
  • The clinical significance of these imaging findings in asymptomatic individuals requires further investigation.

Purpose of the Study:

  • To determine the prevalence of inflammatory paranasal sinus changes in an asymptomatic Irish population.
  • To investigate potential seasonal variations in these findings.
  • To assess the implications of these changes as a potential normal variant.

Main Methods:

  • Retrospective analysis of 221 patients who underwent brain MRI.
  • Evaluation of T2-weighted MRI sequences for paranasal sinus disease.
  • Inclusion of imaging data from both winter and summer time points.

Main Results:

  • Approximately 50% of the study cohort exhibited morphological paranasal sinus changes on MRI.
  • No specific mention of seasonal variation findings.
  • Imaging findings suggest these changes could represent a normal variant in asymptomatic individuals.

Conclusions:

  • Morphological paranasal sinus changes are common in asymptomatic individuals and may be considered a normal variant.
  • Distinguishing between incidental findings and active sinusitis requires careful correlation with clinical symptoms and signs.
  • Further research may clarify the etiology and clinical relevance of these common imaging findings.

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